Manga Kenkanryu

Manga Kenkanryu (Anti-Korea Wave) is a Japanesemanga book where Koreans are described as ugly and stupid. In this manga, the author, Sharin Yamano, says that Japanese colonial rule in Korea was a good thing and Koreans must say "thank you" to Japan for the Japanese rule of their nation. It was thought to be racism by many people, including Japanese.[source?]